Deal with counter that's found on two-wheeler (9)
I believe the answer is:
handlebar
'two-wheeler' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see an association between them that I can't see?
'deal with counter that's found on' is the wordplay.
'deal with' becomes 'handle' (synonyms).
'counter' becomes 'bar' (bar is a kind of counter).
'that's found on' means one lot of letters go next to another.
'handle'+'bar'='HANDLEBAR'
Can you help me to learn more?
(Other definitions for handlebar that I've seen before include "used by bikers" , ""Support for the cyclist"" , "part of a cycle" , "Moustache like one on a bicycle" , "part for rider to grip" .)